The first ICRANet catalog of binary-driven hypernovae

• Published in: EPJ Web of Conferences Vol. 168; p. 4002
• Main Authors: Pisani, G. B., Ruffini, R., Aimuratov, Y., Bianco, C. L., Karlica, M., Kovacevic, M., Moradi, R., Muccino, M., Penacchioni, A. V., Primorac, D., Rueda, J. A., Wang, Y.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Les Ulis EDP Sciences 01-01-2018
• Subjects: Gamma ray bursts; Gamma rays; general binaries; general | gamma-ray burst; general | stars; Gravitation theory; Gravitational collapse; Luminosity; neutron; Red shift; Scientific papers; Scientists; Supernovae
• ISSN: 2100-014X; 2101-6275; 2100-014X
• DOI: 10.1051/epjconf/201816804002

In a series of recent publications, scientists from ICRANet, led by professor Remo Ruffini, have reached a novel comprehensive picture of gamma-ray bursts (GRBs) thanks to their development of a series of new theoretical approaches. Among those, the induced gravitational collapse (IGC) paradigm explains a class of energetic, long-duration GRBs associated with Ib/c supernovae (SN), recently named binary-driven hypernovae (BdHNe).
BdHNe have a well defined set of observational features which allow to identify them. Among them, the main two are: 1) long duration of the GRB explosion, namely larger than 2 s in the rest frame; 2) a total energy, released in all directions by the GRB explosion, larger than 10
52
ergs.
A striking result is the observation, in the BdHNe sources, of a universal late time power-law decay in the X-rays luminosity after 10
4
s, with typical decaying slope of ~ 1.5. This leads to the possible establishment of a new distance indicator having redshift up to z ~ 8.
Thanks to this novel theoretical and observational understanding, it was possible for ICRANet scientists to build the firstst BdHNe catalog, composed by the 345 BdHNe identified up to the end of 2016.